Webmin < 1.930 RCE Vulnerability

# SPDX-FileCopyrightText: 2019 Greenbone AG
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-only

CPE = "cpe:/a:webmin:webmin";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.142804");
  script_version("2024-06-28T05:05:33+0000");
  script_tag(name:"last_modification", value:"2024-06-28 05:05:33 +0000 (Fri, 28 Jun 2024)");
  script_tag(name:"creation_date", value:"2019-08-27 07:44:51 +0000 (Tue, 27 Aug 2019)");
  script_tag(name:"cvss_base", value:"6.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:S/C:P/I:P/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2019-09-04 18:09:00 +0000 (Wed, 04 Sep 2019)");

  script_tag(name:"qod_type", value:"remote_banner");

  script_tag(name:"solution_type", value:"VendorFix");

  script_cve_id("CVE-2019-15642");

  script_name("Webmin < 1.930 RCE Vulnerability");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2019 Greenbone AG");
  script_family("Web application abuses");
  script_dependencies("webmin.nasl");
  script_mandatory_keys("usermin_or_webmin/installed");

  script_tag(name:"summary", value:"Webmin is prone to an authenticated remote code execution (RCE) vulnerability.");

  script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present on the target host.");

  script_tag(name:"insight", value:"rpc.cgi in Webmin through 1.920 allows authenticated Remote Code Execution via
  a crafted object name because unserialise_variable makes an eval call.");

  script_tag(name:"impact", value:"Successful exploitation would allow an authenticated attacker to gain
  control over the target system.");

  script_tag(name:"affected", value:"Webmin version 1.920 and prior.");

  script_tag(name:"solution", value:"Update to version 1.930 or later.");

  script_xref(name:"URL", value:"https://www.calypt.com/blog/index.php/authenticated-rce-on-webmin/");
  script_xref(name:"URL", value:"https://github.com/webmin/webmin/commit/df8a43fb4bdc9c858874f72773bcba597ae9432c");

  exit(0);
}

include("host_details.inc");
include("version_func.inc");

if (!port = get_app_port(cpe: CPE))
  exit(0);

if (!infos = get_app_version_and_location(cpe: CPE, port: port, exit_no_version: TRUE))
  exit(0);

version = infos["version"];
location = infos["location"];

if (version_is_less(version: version, test_version: "1.930")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "1.930", install_path: location);
  security_message(port: port, data: report);
  exit(0);
}

exit(99);